Window ventilator



lJune 5, 1928. 1,672,655

B. N. PARMENTER WINDOW VENTILATOR Filed Jan. 9, 1928 APatented June 5, 1928.

UNITED STATESl BERT N. PARMENTER, OF LAKE FOREST, ILLINOIS.

WINDOW VENTILATOB.

Application 1ed January 9, 1928. Serial No. 245,287.

rThe present invention has for itssalient characteristics the provision,` 1n a window ventilator of the overlapping deiiector slat t`ype, of structural features which make for cheapness of construction, ease of lnstalla.- tion and removal, the exclusion of rain, confinement to the exterior of the window, and security against ,unwarranted entry; associated with the highest degree of efficiency 1n the ventilation of the room from which the window opens.

Heretofore ventilators of-this type have been complicated in arrangement of parts and designed for permanent associatlon with the Window frame or sash, the installation and removal requiring the services of askilled workman. By my invention, the knockedown elements of the device may be readily assembled and disassembled with relation to the window opening b any householder in interiitting and inter ocklng relation without tools; and when installed they are proof against removal when the window is secured in Ventilating position.

In order that'the invention may be readily understood, together with its manufacture, and installation, and operation, I have in the following description predicated upon the accompanying drawings set forth by way of exemplification a preferred embodiment of the same. The description and drawings being purely illustrative, it is to be understood that they are not to be taken in an unnecessarily limiting sense, the invention being susce tible of modification by those skilled in tlie art without departure from the essence thereof as set forth in the appended claims.

In the drawing, to which reference is hereinafter made,

Fig. 1 is an interior elevational view of the lower part of a window with the ventilator in place;

Fig. 2 is a vertical section on the line 2--2 of Fig. 1;

Fig. 3 is a fragmentary horizontalv section through one side of the window and ventilator with the slats removed;

Fig. 4 is a detail in perspective of one of the Slat-retaining mem ers;

Fig. 5 is a similar view of the Slat-locking members; and

Fig. 6 is a fragmentary view illustrating one form of locking connection between Athe upper andlower sash members.

Having reference to the drawing, a winments only, viz, a pair of Slat-retaining sidel members, aj pair of Slat-locking members and a plurality of Ventilating slats. A

The Slat-retaining side members 19 are of a length or height determined by the vertical extent of the Ventilating opening desired. These side retaining members ma be of wood or any desired material, soli or hollow, but are preferably made of sheet metal, as most clearly shown in Fig. 4,

formed in stepped channel shape with stepped web portions 20 and 21 and having side lianges 22 and an intermediate flan e 23 disposed at right angles to the web. f T e web face 20 of these retaining members is provided with a series of slots, here shown as three in number and designated bythe reference numerals 24:, 25 and 26. These slots have a substantial depth, attained in the case of sheet metal by extending the slots in the web portion 20 to the depth of the step and approximately to the plane of the web portion 21. These slots would be formed by a sheet metal worker with the material in the flat,7 the slots being punched and the metal thereafter bent to provide the stepped web 20, 21 and the angularly extending flanges 22 and 23. Advantageously, also, the member would be provided in one edge with the keyhole notch 27.

The pair of Slat-locking members are preferably made of sheet metal formed of Z-cross section, most clearly shown in Fig. 5, and comprising a web 28 and oppositely extending flanges 29 and 30. These locking members may be coextensive in length wlth the retaining members but are preferably of a length corresponding to the distance from the bottom of the retaining members to the bottom of the upper slot 24.

The slats 31 are preferably formed of translucent material, light dilfusing or trans arent glass', although obviously they may e made of opaque material such as sheet metal or wood, all dependent upon the degree to which interference of light through the ventilator is desirable. The slats are of a length corresponding to the distance between the bottoms of the opposed slots or between the. opposed web portions 21 of the retaining members 19 when the latter are disposed in the c'orresponding guides 12 on opposite sides of the window opening, and are of a width sufficiently greater than the length of the slots that their. upper edges will overlie the web portions 21 and extend beyond the same a slight distance in overlapping relation to the sash-separating stops 18.

Sash guides and stops are of standard widths and heights, dependent upon the window area and the light or heavy character of the window frame and sash. The slatretaining side members may therefore be formed up in stock sizes to corresponding to these graded standards. Assuming that a certain'window opening is to be equlpped with the Ventilator of this invention, the

complete equipment comprises two of the Slat-retaining side members, two Slat-locking members and slats corresponding in number to the slots in the side members, all of a stock size to interfi't with each other and to fit the window opening.

First, the two retaining members 19 are placed in the outer guides with their slotted faces opposed to eachother. Second, the slats are dropped into the slots from the inside through the upper open ends thereof, the lower edges finding a seat against the flanges 22. Third, the flange 29 of each locking member is pressed into the space between the inner fiange 23 of the retaining member and the adjacent side face of the stop 18, in which position the web 28 of the locking member overlies the front face of the stop 18 and thef flange 30 engages the upper inner edges of the slats 31 in overlapplng relation.

The installation of the ventilator is now complete and it may be disassembled by a, reversal of the steps just enumerated. In will be observed that the retaining members 19 are securely held in place by the trans- `verse bracing effect of the slats 31, and the slats 31 are, in turn, held in place by the overlapping relationship of the locking flange 30. No tools have been required for installation or removal.

If it be desired to modify the interference with air currents entering the room, one or more of the slats 31 may be removed from its Vplace and the ends seated within the opposed pockets formed by the opposed faces of the webs 21 and 28 as illustrated in Fig. 3. Upon occasion where the entry of air is desired to be unobstructed over a period of time, all of the slats 31 may be stored as above described and illustrated instead of dismantling completely and storing the parts 1n a closet or elsewhere.

The ventilator, as heretofore describen`l .s complete in itself and is secure against accidental displacement or 'disarrangement lAir currents from without are deflected upwalls slightly diverging to form an up. wardlv flaring slot, the lower wall being slightly out of parallel with and of less inclination than the corresponding walls of the slots 25 and 26. This permits the upper inner edge of the slat to swing, from a position parallel to the other slats with its inner edge clearing the path of the sash rail 14, to a position overlapping the guideway of the sash. It follows that when the sash 14 is Harige 30 of the locking strips, but the upper slat overlies the upper end of the flange 30 and is, in turn, overlain by the sash 14. Obviously none of the elements of the ventilator can now be moved unless the window sash 14 be raised out of engagement with the upper edge of the Ventilating slat 31.

owever, unauthorized raising of the cash to release the slat is precluded by an ordinary sash lock 32 mounted on the inside of the inner sash rail 14 and engaging within a recess of the outer sash stile 15 as indicated in Fig. 6.

Although not necessary to the security of the window ventilator against accidental or unwarranted displacement. the parts will be steadied during installation and additional security may be obtained by a screw Seated in the guideway 12. the head 33 of the screw interlocking with the keyhole notch 27 in the flange 22 of the Slat-retaining member. The screw would be permanently seated in the window stop and the engagement and disengagement would be effected by simply moving the retaining member into and out of its position in the guide.

Toicushion the sash rail and prevent injury to the slat or the painted surface of the sash` the edge of the slat may be fitted with a rubber or metallic saddlei clip 34;

not `interfere in any way with draperies and window shades, sightly, effective in .excluding rain and snow and'in directing air currents to the upper room space away from av floor location in front of the window; a device comprising few simple elements adapted to economical manufacture and for ready installation and removal by anyone without tools and yet proof against unwarranted displacement and unlawful entry even when the window sash is in open Ventilating position.

I claim:

l. The combination with a window including sash, sash guides, and stops, of a ventilator comprising a pair of Slat-retaining members for seating in the guides between the stops, the opposed faces of said members provided with diagonally extending slots, slats bridging the window opening with their endsseated in the slots, and Slat-locking members seatedbetween the edges of the retaining members and the adjacent stops and engaging over the upper inner edges of the slats, whereby the retaining members are held in the guides by the slats and the slats are held in engagement with the retaining members by the lockingmembers.

2. The combination with a window including sash, sash guides, and stops, of a ventilator comprising a pair of Slat-retaining members for seating in the guides between the stops, the opposed faces of .said members provided with diagonally extending slots, slats of greater width than the lengths of the slots and bridging the window opening with their ends loosely seated in the slots and their upper edges extending beyond the slots and overlapping the adjacent stops, and slat-locking members comprising Z-seetion strips'having one flange seated between the edges ofthe retaining members and the adjacent stops with the web overlying the stop and the other ange engaging over the upper inner edges of the slats, whereby the. retaining members are held in the guides by the slats and the slats are held in engagement with the retaining members by the locking members. A

3. The combination with a Window including double-hung sash, inner and outer sash.. guides and stops, of a ventilator comprising a pair of Slat-retaining members for seating in the outer guides between 'the stops, the opposed faces of the said members provided with diagonally extending vertically overlapping slots, light-transmitting slats bridging the window opening with their ends seated in the slots, and Slat-locking members seated between the edges of the retaining members and the adjacent stops and en aging over the upper inner edges of the-s ats, whereby the retaining members are held 1n the guides by the slats and the, slats .areheld in engagel'nent with the retaining members by the locking members.

4. The combination with a windowv including double-hung sash, inner and outer' sash guides and stops, of a ventilator comprising alpair ofslat-retaining members for seating in the outer guides between the stops, the opposed faces of the said members provided with diagonally extending vertically overlapping slots, light-transmitting slats of greater width than thelengths of the slots and bridging the window opening with their ends loosely seated in the slots and their upper edges extending inwardly beyond the slots and overlapping the adjacent stops, and Slat-locking members comprising Z-'section strips having one flange seated between the edges of the retaining members in the adjacent stops,'with the webs overlying the stops and the other flange engaging over the upper inner edges of the slats, whereby the retaining members are held in the guides by the slats and the slats are held in engagement with the retaining members iby' the locking members.

A 5. The combination with a window including double-hung sliding sash, inner and outer sash guides and stops, of a ventilator comprising a pair of Slat-retaining members for seating in the' outer guides between the yother flange engaging over the upper inner edges of the slats, the upper slot being of such inclination as to permit the upper inner edge of the slat to extend inwardly beyond the stops and to overlie the inner guides beneath the inner sash when raised, whereby the retaining members are held in the guides by the slats and the slats are held in engagement with the retaining members by the locking members, and the locking members are held against displacement by the inner sash.

6. The combination with a window including double-hung sliding sash, inner and outer sash guides and stops, of a ventilator comprising a' pair of slat--retaining members for seating in the 'outer guides between the stops, the opposed faces of the said retaining members provided with diagonally extend- Aslats and the slats are held in enga ement ing vertically overlapping slots,'transparent with the retainin members by the. oclcing slats ,of greaterA width than the length of the members, one of t e Slat-retaining members slots and bridging the window opening with having a notched opening vto its bottom contheir ends loosely seated in the -slots and cealed side, a screw or the like with its head their upper edges' extending inwardly .bedisposed between the stops andadapted to youd the Slots and Overlapping the adjacentv interlock with thelnotch in the retaining stops, and Slat-,locking members comprising member when-the latter is inserted in the Z-section strips havin .one liange seated beguide, whereby to prevent vertical displacetween the edges of t-e retaining members ment of the retaining member.

and the adjacent stops with the webs overl 8. The vcombination with a window includlying the stops and the other ange Aengaging sash, sash guides, and stops, of aventiing over the upper inner edgesof the s ats, latorv comprislng a pair of Slat-retaining the upper slat being of u wardly inwardly\members for-seating in the guides between `Haring shape and having lts lower wall at a the stops, the opposedfaces of said members less inclination than the other slots to perstepped to prov1de primary. and secondary mit the upper inner edge of that-Slat Vto exweb portions in different planes, the primary tend inwardly beyond thejstops and verlie web portions .provided with diagonal slots the inner guide in the path of the inner sashv extending'in depth to the planes of the lsecwhen raised and lowered, whereby the re-` ondary web portions, slats bridging the wintaining members are held in the guides by dow opening with their ends seated in the i the slats andthe slats are` held in en'gagslots and overlyin the secondary web porbeing raised and to drop beneath said Sash and the adjacent stops with the webs overlyd by the raised sash ing the stops and the other flange .engaging V ing members are held in the guides bythe ment with the retaining members by t e tions, and slat-loc ing members comprising .locking members, the upper slat being per- Z-'section strips having one liange seated bemitted to ride against the lower sash when 'tween the edges of the retaining members when raised and to be he against displacement, and means for locking \over the upper .inner edges of the slats, thesash in its raised Ventilating position.

7. The combination with a window including sash, sashguides,l and stops, of a yin engagement with the retaining members ventilator comprising a pair of slat-retainbythe 'lookin members, the secondary web ing member for seating in the guides beportions of t e retaining members lying in tween the stops', the opposed faces of said substantially the-same p ane as the web pormembers provided with diagonally extend'-` tions of the locking members whereby to proing slots, slats'bridging the window open- 4Vide between the said web portions on oppoing with their -ends seated in the slots, and site sides 4of the window opening a receptacle Slat-locking members seated `between the edges of the retaining members and the adjacent stops 'and engagin over the upper inner edges of the slats w ereby the retain! fromthe slots.

AIn testimony whereof I have hereunto subscribed my name.

' lBERT N. PARMENTER.

for one or4 more of the slats when removedI v whereby 'the retaining members are held in the guides by the slats and the slatsv areheld- 

